Since pheochromocytoma may produce adrenocorticotropin, insulin-like growth factor 2, somatostatin, growth hormone-releasing hormone, corticotropin-releasing hormone, and interleukin 6, it was considered, however, that it might also stimulate the adrenal cortex to hyperfunction and proliferation through the paracrine pathway (21). Here, SST is linked to pheochromocytoma.